超宽带信号在室内环境下的性能分析

The Analysis of Ultra-wideband Signal′s Performance in Residential Environments

在对高斯脉冲波形的时域和频域特性进行分析的基础上,采用直接序列扩频方式,进行脉幅调制产生超宽带信号。通过参考IEEE推荐的室内信道模型,重点对室内传播的链路预算进行仿真,对信号的性能进行分析和比较。经过一系列的仿真后,得出高斯四阶导数脉冲波形在实际系统中更具有实用价值的结论。

Based on the characteristics analysis of the Gauss impulse in time and frequency domains,we generate the UWB signal by 2PAM-DS modulation.In particular,we simulate the UWB signal＇s link-budget in indoor environments according to the model proposed by IEEE.Then we analyze and compare the performances of the signal.It is proved,based on a series of simulations,that the fourth derivative Gaussian pulse is more practical than other Gaussian pulses.